Heilongjiang Junhe Building Materials Technology Co., Ltd , https://www.junhejiancai.com
From seawater to irrigation, through crop transpiration and photosynthesis, water undergoes multiple transformations, resulting in significant losses. A large portion of the water consumed in the field is lost through evaporation and inefficient transpiration. Currently, the efficiency of agricultural water use in China remains low, indicating substantial potential for improvement. Soil moisture meters play a vital role in monitoring these losses, as they help assess how much of the water is actually used effectively by crops. Understanding soil water dynamics is essential for better water management. Therefore, studying the characteristics and evaluation methods of soil water resources is fundamental to accurately assessing and efficiently utilizing agricultural water. Promoting advanced soil water utilization technologies can significantly enhance the sustainable development of agriculture, forestry, and animal husbandry while protecting the ecological environment. This book focuses on the North China Plain to explore theoretical and practical approaches to soil water resource management and their effective use. For more information, visit: Soil Moisture Analyzer http://
The water scarcity in the North China Plain has become a critical challenge that hinders the sustainable development of agriculture, which is the largest water-consuming sector. The situation is alarming, with many surface water bodies in the Hebei region drying up and groundwater levels continuously dropping due to excessive extraction. According to data from 1996 to 1997, the over-exploitation of shallow groundwater reached 15.6×10⹠m³ per year, leading to the depletion of local aquifers. Deep groundwater was also overused at a rate of 24.55×10⹠m³ annually. In the early 1960s, the depth of shallow groundwater in the piedmont plain ranged between 1 and 10 meters. By 2001, it had dropped to 4–40 meters. In the Luzhou area of the eastern coastal plain, the depth of the deep groundwater funnel center fell from 9.21 meters in 1972 to 100.88 meters in 2003. Despite these severe conditions, agricultural water waste remains a serious issue. Current agricultural practices are largely driven by excessive water use and environmental degradation, making this model unsustainable. Over 70% of precipitation in the North China Plain is naturally converted into soil water, which is the only form directly usable by plants. However, soil water is still not widely recognized or valued as a key component of water resources. When evaluating water availability, soil water—often the largest portion—is frequently overlooked, leading to a misunderstanding of agricultural water resources. The assessment methods for soil water have yet to be fully integrated into broader water resource management strategies.